66065708 has 6 divisors (see below), whose sum is σ = 115614996. Its totient is φ = 33032852.

The previous prime is 66065707. The next prime is 66065711. The reversal of 66065708 is 80756066.

It is not an unprimeable number, because it can be changed into a prime (66065707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258210 + ... + 8258217.

It is an arithmetic number, because the mean of its divisors is an integer number (19269166).

Almost surely, 2^66065708 is an apocalyptic number.

It is an amenable number.

66065708 is a deficient number, since it is larger than the sum of its proper divisors (49549288).

66065708 is a wasteful number, since it uses less digits than its factorization.

66065708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16516431 (or 16516429 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 66065708 is about 8128.0814464423. The cubic root of 66065708 is about 404.2580696004.

The spelling of 66065708 in words is "sixty-six million, sixty-five thousand, seven hundred eight".